Serving tray



FIG. 1 is a front perspective view of a serving tray in accordance with the present design;

FIG. 2 is a plan view of the serving tray illustrated in FIG. 1;

FIG. 3 is a side elevational view of the serving tray illustrated in FIG. 1;

FIG. 4 is a top view of the serving tray illustrated in FIG. 1; and,

FIG. 5 is a bottom view of the serving tray illustrated in FIG. 1. 

CLAIM The ornamental design for a serving tray, as shown and described. 